Thread: Whistling vent

Just checking on this.

When a steam system register vent has a whistle.

Does this indicate that the vent is worn and in need of replacement, or is it ok as long as steam is not escaping?

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Whistle is evidence that steam is being released and that is good. The valve is for presure relief which is needed in a high pressure system, safety release. If no escaping steem then system could blow up. Some valves will act as a air purge to allow a better flow of steam. Valve shuts when hot. It is all dependent on how your system was designed. Get a qualified plumber to check your system out including all valves.

Good steam vents tend to 'whistle' more. The cheapo ones at the big box store tend to 'piss' more.
Good vents are pricey =/-$20 depending. The cheapo ones are like 5 or 6. Vents are also categorized/sized for where in the system they are. Main vent, intermediate run vent, vent way at the end of the run, etc.